This pattern uses US terminology.
Note: Due to so many people having problems with the stitch count I recommend thinking about the project like this:
There are 12 “sections,” each one increasing by 1 stitch. The increase is in the form of 2 dc’s in the first stitch space (ch 3 counts as a dc in the first stitch of each round). So you should have an increase of 12 stitches per row.
Please feel free to let me know of any other problems you may be having with this pattern :o)